Yang Yang - Intelligent IoT for the Digital World

4 Chapter 4Figure 4.1 An example of three service function chains (SFCs) for live video...Figure 4.2 An illustration of cross‐edge service function chain deployment....Figure 4.3 An illustration of the basic idea of the performance analysis.Figure 4.4 The workload trace of Google, Facebook, HP, and Microsoft data ce...Figure 4.5 The competitive ratio of different online algorithms.Figure 4.6 The effect of the switching cost on the competitive ratio.Figure 4.7 The effect of the control parameter ε on the competitive rat...Figure 4.8 The competitive ratio of various rounding schemes.Figure 4.9 The overall competitive ratio of different algorithm combinations...Figure 4.10 Dynamic network slicing architecture.Figure 4.11 Distribution of BSs and considered areas.Figure 4.12 Offloaded workload for both types of service in different areas ...Figure 4.13 Offloaded workload under different RTT between fog nodes.Figure 4.14 Offloaded workload under different workload arrival rates for im...Figure 4.15 Offloaded workload under different amounts of harvested energy....Figure 4.16 Inter‐operator network sharing: (a) a spectrum pool and (b) spec...Figure 4.17 Locations of BSs deployed by two major cellular operators in the...Figure 4.18 Maximum number of IoT (eMTC) devices that can coexist with cellu...Figure 4.19 Maximum number of IoT (eMTC) devices that can coexist with cellu...

5 Chapter 5Figure 5.1 A collaborative learning system.Figure 5.2 Two‐dimensional example. Original data vectors and projected data...Figure 5.3 Test accuracy based on projected data versus the number of partic...Figure 5.4 Test accuracy based on projected data versus the condition number...Figure 5.5 Example images from the MNIST dataset.Figure 5.6 CNN with a projected MNIST image as input.Figure 5.7 Impact of the number of participants (MNIST). The error bars for ...Figure 5.8 Impact of data compression on learning performance (MNIST, ).Figure 5.9 Impact of differential privacy loss on learning performance (MNIS...Figure 5.10 Impact of the number of participants (spambase). The error bars ...Figure 5.11 Overview of our proposed privacy‐preserving collaborative learni...Figure 5.12 CNN structure.Figure 5.13 Impact of privacy loss level ε on the test accuracy of the ...Figure 5.14 Impact of batch size on the test accuracy of the collaboratively...Figure 5.15 Impact of privacy loss level ε on the test accuracy of the ...Figure 5.16 ObfNet for remote inference. The fog node i desires privacy prot...Figure 5.17 The procedure to generate ObfNets.Figure 5.18 Structure of for FSD recognition.Figure 5.19 Structure of for FSD recognition.Figure 5.20 Test accuracy of different ObfNet–InfNet concatenations in 10 te...Figure 5.21 Structure of for MNIST recognition.Figure 5.22 Structure of for MNIST recognition.Figure 5.23 Test accuracy of InfNets and ObfNet–InfNet concatenations for MN...Figure 5.24 Obfuscation results of ObfNet on MNIST.Figure 5.25 Structure of for the ASL dataset.Figure 5.26 Test accuracy of InfNet and ObfNet–InfNet concatenations for ASL...Figure 5.27 Obfuscation results of ObfNet on ASL.Figure 5.28 InfNet's per‐sample execution time on Jetson versus batch size. ...Figure 5.29 Data sample transmission time versus network connection data rat...

6 Chapter 6Figure 6.1 Per‐second ENF measured at two locations apart in a city. Mean ...Figure 6.2 Ac voltage and EMR data.Figure 6.3 Illustration of an EMR natural timestamping system.Figure 6.4 EMR capture devices.Figure 6.5 Challenges of zero crossing detection in a noisy EMR signal, and ...Figure 6.6 Comparison between the dead‐zone approach and our BPF‐based appro...Figure 6.7 Mean decoding error versus natural timestamp length under differe...Figure 6.8 Impact of sampling rate and timestamp length on the RPi‐based EMR...Figure 6.9 ENF trace computed based on EMR measurements captured by the Z1 m...Figure 6.10 Impact of sampling rate and timestamp length on the timestamping...Figure 6.11 ENF trace estimated by the Z1 mote based on EMR signals sampled ...Figure 6.12 Distribution of decoding errors of RPi‐based EMR sensor at sites...Figure 6.13 Decoding errors in one month. Each error bar is computed based o...Figure 6.14 Deployment spots at site B. An RPi‐based EMR sensor is deployed ...Figure 6.15 Z1 decoding error versus EMR signal strength.Figure 6.16 Decoding errors of Z1 under the sliding and neighboring approach...Figure 6.17 Factory floor plan and EMR sensors' locations.Figure 6.18 ENFs sensed by the RPi‐based EMR sensor and the Z1 on the factor...Figure 6.19 Natural timestamp decoding errors in the factory environment. Th...Figure 6.20 Dividing a natural timestamp to sub‐natural timestamps to verify...Figure 6.21 PDF of decoding offsets when the decoding condition is respectiv...Figure 6.22 A schematic of the EMR spoofer.Figure 6.23 EMR spoofer (left) and spoofing experiment (middle and right).Figure 6.24 The ENF sensed by the victim EMR sensor when the EMR spoofer is ...Figure 6.25 Packet delay attack and secure clock synchronization.Figure 6.26 NTP principle and packet timestamping.Figure 6.27 Performance of NTP over a BLE connection.Figure 6.28 Flora.Figure 6.29 TouchSync prototypes.Figure 6.30 No human body contact.Figure 6.31 iSEPs on the same wearer (shared ground).Figure 6.32 iSEPs on different wearers (shared ground).Figure 6.33 Absolute time displacement between the EMR signals captured by...Figure 6.34 iSEPs on the same wearer (independent grounds).Figure 6.35 iSEPs on different wearers (independent grounds).Figure 6.36 Normalized range and time displacement of iSEPs under differen...Figure 6.37 A synchronization process of TouchSync.Figure 6.38 iSEP signal processing pipeline.Figure 6.39 A synchronization session of TouchSync. The vertical arrows repr...Figure 6.40 An example of solving the integer ambiguity. The transmissions o...Figure 6.41 Convergence speed of IAS.Figure 6.42 Distribution of absolute clock offset estimation errors.Figure 6.43 An example of IPS‐based TouchSync (unit: ms).Figure 6.44 Convergence speed under various settings of IPS period.Figure 6.45 Impact of signal strength.Figure 6.46 Wearing position.Figure 6.47 EMR signals near an electric oven and a microwave oven.Figure 6.48 Errors introduced into time displacements of the EMR signals.Figure 6.49 Laboratory floor plan with test points marked.Figure 6.50 Home floor plan with test points marked.Figure 6.51 One‐way delays over a ngrok tunnel.Figure 6.52 Accuracy of TouchSync‐over‐Internet.

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